Bump version to 1.0.5 and update installation instructions

- Update version to 1.0.5 in all package files and build script
- Add double-click .dxt installation as recommended option in README
- Keep npx option as alternative installation method

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

opendia-mcp/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "opendia",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "opendia",
-      "version": "1.0.4",
+      "version": "1.0.5",
       "license": "MIT",
       "dependencies": {
         "cors": "^2.8.5",
@@ -86,7 +86,7 @@
       }
     },
     "node_modules/call-bound": {
-      "version": "1.0.4",
+      "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/call-bound/-/call-bound-1.0.4.tgz",
       "integrity": "sha512-+ys997U96po4Kx/ABpBCqhA9EuxJaQWDQg7295H4hBphv3IZg0boBKuwYpt4YXp6MZ5AmZQnU/tyMTlRpaSejg==",
       "license": "MIT",